From 8a5edb25e08fd645df9786d461e59991e367874b Mon Sep 17 00:00:00 2001
From: Christian Medina <37550954+cmedinasoriano@users.noreply.github.com>
Date: Wed, 1 Jul 2026 23:45:05 -0400
Subject: [PATCH] fix: specify correct transformer layer class for FSDP
 auto-wrap

---
 train.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/train.py b/train.py
index 6de6837..86ed42a 100644
--- a/train.py
+++ b/train.py
@@ -219,11 +219,13 @@ def train(config_path):
         eval_steps=config.get("eval_steps", 100),
         bf16=True,
         gradient_checkpointing=config.get("gradient_checkpointing", True),
-        fsdp="full_shard auto_wrap",
+        fsdp=["full_shard", "auto_wrap"],
         fsdp_config={
             "backward_prefetch": "backward_pre",
             "forward_prefetch": "true",
             "cpu_offload": "false",
+            "auto_wrap_policy": "TRANSFORMER_BASED_WRAP",
+            "transformer_layer_cls_to_wrap": "Qwen3_5MoeDecoderLayer",
         },
     )